Samsung's mobile boss DJ Koh confirmed the company's plans to CNBC, saying plainly "it's time to deliver" on a foldable phone.
The company could unveil it in November at the Samsung Developer Conference.
Samsung may be readying a device with four cameras on the back and it won't be a Galaxy Note nor a Galaxy S (nor the foldable Galaxy F) phone. He also hinted that the "unfolded" mode will provide benefits that go beyond having a tablet-sized screen, but didn't elaborate on what these benefits might be.
Smartphones have become a bit predictable in the past few years, leaving consumers craving something new to send them running to stores for an upgrade.
Moreover, Koh promised that the device will have added functions when it's unfolded so it can give a reason for early adopters to buy it. It's just under four months before the end of 2018, and that means we should be seeing the first "innovative" Galaxy A handset anytime now.
Koh didn't provide many details about how the device would work. The advances in OLED technology, which the smartphone giant now has a lead in terms of maturity, suggest a single-screen device with a flexible and foldable display.
Why now for the Samsung Galaxy X, though?
The document shows a narrow Samsung device with a screen that bends and folds like an old-school flip phone handset, with a large hinge.
Late a year ago, patent drawings revealed more details of what could be Samsung's first foldable phone. The firm is expected to launch three new iPhones, but they are likely to be iterative designs rather than major innovations like 2017's iPhone X. All three phones are expected to sport the iPhone X's "notch" design, and its edge-to-edge screen.
There's a race on to introduce the world's first folding smartphone, and Samsung appears committed to winning.